DE181913C - - Google Patents
Info
- Publication number
- DE181913C DE181913C DENDAT181913D DE181913DA DE181913C DE 181913 C DE181913 C DE 181913C DE NDAT181913 D DENDAT181913 D DE NDAT181913D DE 181913D A DE181913D A DE 181913DA DE 181913 C DE181913 C DE 181913C
- Authority
- DE
- Germany
- Prior art keywords
- piston
- stroke
- exhaust
- explosion
- channels
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B41/00—Engines characterised by special means for improving conversion of heat or pressure energy into mechanical power
- F02B41/02—Engines with prolonged expansion
- F02B41/04—Engines with prolonged expansion in main cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/04—Engines with variable distances between pistons at top dead-centre positions and cylinder heads
- F02B75/048—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of a variable crank stroke length
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
- F16C3/22—Cranks; Eccentrics
- F16C3/28—Adjustable cranks or eccentrics
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
-JVI 181913-KLASSE 46 a. GRUPPE -JVI 181913- CLASS 46 a. GROUP
Viertaktexplosionskraftmaschine. Patentiert im Deutschen Reiche vom 26. März 1905 ab. Four-stroke explosive engine. Patented in the German Empire on March 26, 1905.
Da die Eröffnung des Auslaßventils bei Explosionskraftmaschinen infolge der dabei noch herrschenden beträchtlichen Endspannung im Zylinder eine ziemliche Arbeitsmenge erfordert, hat man in der Zylinderwandung Entlastungs- bezw. Vorauspuffkanäle angebracht. So sind beispielsweise an im Zweitakt arbeitenden Maschinen Kanäle angeordnet, durch welche nach ihrer Freilegung vomSince the opening of the exhaust valve in explosion engines as a result of this considerable final tension still prevailing in the cylinder requires a considerable amount of work, one has relief resp. Pre-puff channels attached. For example, they are on in two-stroke working machines arranged channels through which after their exposure from
ίο Kolben die gespannten Gase auspuffen, wodurch eine plötzliche Druckentlastung im Innern des Zylinders und ein selbsttätiges Aufspringen des unter Federwirkung stehenden Auslaßventils bewirkt wird. Auch Viertaktmaschinen sind mit Vorauspuffkanälen versehen, welche bei jedem Kolbenhube, also auch am Ende der Saugperiode, freigelegt werden.ίο Pistons exhaust the cocked gases, causing a sudden pressure relief inside the cylinder and an automatic opening of the one under the action of a spring Exhaust valve is effected. Four-stroke engines are also provided with pre-exhaust ducts, which occur with every piston stroke also at the end of the suction period.
Die den Erfindungsgegenstand bildende Maschine unterscheidet sich von bekannten Maschinen im wesentlichen dadurch, daß die in der Zylinderwandung angebrachten Kanäle nur kurz vor dem Ende des Expansionshubes vom Arbeitskolben freigelegt werden, um ein Vorauspuffen eines großen Teiles der verbrannten- Gase zu bewirken.The machine forming the subject of the invention differs from known ones Machines essentially in that the channels made in the cylinder wall can only be exposed by the working piston shortly before the end of the expansion stroke in order to prevent a large part of the to effect burned gases.
Auf der Zeichnung ist eine solche Maschine dargestellt.Such a machine is shown in the drawing.
Fig. ι veranschaulicht einen zur Antriebswelle senkrechten Längsschnitt durch die Maschine, an welcher mehrere die eigenartige Bewegung des Kolbens bedingende Zahnräder vorgesehen sind. Der Kolben ist an dem Ende seines Auspuffhubes dargestellt.Fig. Ι illustrates a perpendicular to the drive shaft longitudinal section through the Machine on which several gears causing the peculiar movement of the piston are provided. The piston is shown at the end of its exhaust stroke.
Die Fig. 2, 3 und 4 sind schematische Ansichten, welche den Kolben mit seiner Steuerung aufeinanderfolgend an dem Ende des Saughubes, an dem Ende des Verdichtungshubes und an dem Ende des Expansionshubes veranschaulichen.Figs. 2, 3 and 4 are schematic views showing the piston with its control successively at the end of the suction stroke, at the end of the compression stroke and at the end of the expansion stroke illustrate.
Fig. 5 ist ein teilweiser Querschnitt nach Linie «und Fig. 6 nach Linie x-y (Fig. 1).Fig. 5 is a partial cross-section along line 1 and Fig. 6 along line xy (Fig. 1).
Bei der in den Fig. 1 bis 4 abgebildeten Maschine sind eine Anzahl Durchbrechungen h in der Zylinderwandung angeordnet, welche von dem an dem Ende seines Expansionshubes stehenden Kolben/ freigelegt werden. Der Zylinderdeckel α ist mit Hohlräumen zur Aufnahme des Auspuffventils c und des Einlaßventils b versehen. Der mit einer Exzenterscheibe j ausgerüstete Kurbelzapfen k besitzt ein mit dem Exzenter aus einem Stück bestehendes Zahnrad oder dergl. j1, welches konzentrisch zu dem Kurbelzapfen k angeordnet ist. Das Zahnrad j1 greift in ein Zahnrädchen /, welches zusammen mit einem zweiten Zahnrad m auf einer Welle V- befestigt ist. Die Welle Z1 ist in dem Schwungrade r so gelagert, daß ihr Rad m in ein anderes Zahnrad η eingreift, welch letzteres an dem Kurbelgehäuse q fest und um die Antriebswelle j? lose gelagert ist.In the machine shown in FIGS. 1 to 4, a number of openings h are arranged in the cylinder wall, which are exposed by the piston / at the end of its expansion stroke. The cylinder cover α is provided with cavities for receiving the exhaust valve c and the inlet valve b. The crank pin k , which is equipped with an eccentric disk j , has a toothed wheel or the like consisting of one piece with the eccentric j 1 , which is arranged concentrically to the crank pin k. The gear j 1 meshes with a gear / which is fastened together with a second gear m on a shaft V-. The shaft Z 1 is mounted in the flywheel r so that its wheel m engages another gear η , which latter is fixed to the crankcase q and to the drive shaft j? is loosely stored.
Das Übersetzungsverhältnis der Zahnräder ist so gewählt, daß bei einer einmaligen Umdrehung des Schwungrades r die Exzenterscheibe j und das Zahnrad j1 eine halbe Umdrehung ausführen. Da nun die Kolbenstange χ an der Exzenterscheibe j angreift, so wird bei einer Umdrehung der Antriebswelle dem Kolben eine sich eigenartig verändernde Bewegung mitgeteilt, wie die Fig. 1 bis 4 erkennen lassen.The transmission ratio of the gears is chosen so that with a single revolution of the flywheel r, the eccentric j and the gear j 1 perform half a revolution. Since the piston rod χ now engages the eccentric disk j , a peculiarly changing movement is communicated to the piston during one revolution of the drive shaft, as can be seen in FIGS. 1 to 4.
In Fig. ι ist der Kolben an dem Ende des Auspuffhubes gezeigt; der Kolben f befindet sich in unmittelbarer Nähe des : Zylinderdeckels a, die Auspuffgase sind durch die Öffnung des Ventils c ausgeblasen worden.In Fig. Ι the piston is shown at the end of the exhaust stroke; the piston f is in the immediate vicinity of: cylinder cover a, the exhaust gases have been blown out through the opening of valve c.
Die Fig. 2 zeigt den Kolben f in seiner tiefsten Lage am Ende des Saughubes, wobei die Durchbrechungen h noch bedeckt sind.Fig. 2 shows the piston f in its lowest position at the end of the suction stroke, the openings h are still covered.
Der Kolben/ ist in Fig. 3 an dem Ende seines Verdichtungshubes angelangt an einer Stelle, welche vor dem Endpunkte des Auspuffhubes liegt. Diese Kürzung des Kolbenweges tritt ein, weil die Exzenterscheibe j bis jetzt eine halbe Drehung machte, ihr größerer Teil ist der Antriebswelle zugerichtet. Ein genügend großer Raum ist in dem Zylinder für das verdichtete Gasluftgemisch vorhanden.The piston / has reached the end of its compression stroke in FIG. 3 at a point which is before the end point of the exhaust stroke. This shortening of the piston travel occurs because the eccentric disk j has made half a turn up to now, the greater part of which is trimmed to the drive shaft. A sufficiently large space is available in the cylinder for the compressed gas-air mixture.
Fig. 4 zeigt den Kolben am Ende seines Expansionshubes, in welcher Stellung die Kanäle h vom Kolben freigelegt werden, da die Exzenterscheibe j sich noch weiter gedreht hat. Diese äußerste Stellung erreicht der Kolben nur am Ende des Expansionshubes. 4 shows the piston at the end of its expansion stroke, in which position the channels h are exposed by the piston, since the eccentric disk j has continued to rotate. The piston only reaches this extreme position at the end of the expansion stroke.
Claims (1)
Publications (1)
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DE181913C true DE181913C (en) |
Family
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Family Applications (1)
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0184042A2 (en) * | 1984-11-23 | 1986-06-11 | Politechnika Warszawska | Crank mechanism of the internal combustion piston engine with variable crankthrow |
DE4014692A1 (en) * | 1990-05-08 | 1991-11-14 | Reinhard Schall | Four-stroke cycle IC engine - has geometrical expansion stroke greater than geometrical compression stroke |
WO2009105841A2 (en) * | 2008-11-24 | 2009-09-03 | Ramzan Usmanovich Goytemirov | Internal combustion engine |
WO2011006537A1 (en) * | 2009-07-15 | 2011-01-20 | Sleper, Joannes, Jacobus, Josephus | A reciprocating piston mechanism |
WO2012143078A1 (en) * | 2011-04-19 | 2012-10-26 | Bayerische Motoren Werke Aktiengesellschaft | Device for changing a compression ratio of a reciprocating piston internal combustion engine |
US8714134B2 (en) | 2008-02-13 | 2014-05-06 | Gomecys B.V. | Reciprocating piston mechanism and a method of increasing internal EGR in an internal combustion engine |
US20140360292A1 (en) | 2012-01-24 | 2014-12-11 | Joannes Jacobus Josephus SLEPER | Reciprocating piston mechanism |
US10145299B2 (en) | 2014-04-08 | 2018-12-04 | Gomecsys B.V. | Internal combustion engine including variable compression ratio |
US10233966B2 (en) | 2013-11-13 | 2019-03-19 | Gomecsys B.V. | Method of assembling and an assembly of a crankshaft and a crank member |
US10557409B2 (en) | 2015-10-22 | 2020-02-11 | Gomecsys B.V. | Heat engine comprising a system for varying the compression ratio |
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0
- DE DENDAT181913D patent/DE181913C/de active Active
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0184042A2 (en) * | 1984-11-23 | 1986-06-11 | Politechnika Warszawska | Crank mechanism of the internal combustion piston engine with variable crankthrow |
EP0184042A3 (en) * | 1984-11-23 | 1987-03-25 | Politechnika Warszawska | Crank mechanism of the internal combustion piston engine with variable crankthrow |
DE4014692A1 (en) * | 1990-05-08 | 1991-11-14 | Reinhard Schall | Four-stroke cycle IC engine - has geometrical expansion stroke greater than geometrical compression stroke |
US8714134B2 (en) | 2008-02-13 | 2014-05-06 | Gomecys B.V. | Reciprocating piston mechanism and a method of increasing internal EGR in an internal combustion engine |
WO2009105841A3 (en) * | 2008-11-24 | 2013-07-18 | Ramzan Usmanovich Goytemirov | Internal combustion engine |
WO2009105841A2 (en) * | 2008-11-24 | 2009-09-03 | Ramzan Usmanovich Goytemirov | Internal combustion engine |
WO2011006537A1 (en) * | 2009-07-15 | 2011-01-20 | Sleper, Joannes, Jacobus, Josephus | A reciprocating piston mechanism |
US9279363B2 (en) | 2009-07-15 | 2016-03-08 | Gomecsys B.V. | Reciprocating piston mechanism |
WO2012143078A1 (en) * | 2011-04-19 | 2012-10-26 | Bayerische Motoren Werke Aktiengesellschaft | Device for changing a compression ratio of a reciprocating piston internal combustion engine |
US9249724B2 (en) | 2011-04-19 | 2016-02-02 | Bayerische Motoren Werke Aktiengesellschaft | Device for changing a compression ratio of a reciprocating piston internal combustion engine |
US20140360292A1 (en) | 2012-01-24 | 2014-12-11 | Joannes Jacobus Josephus SLEPER | Reciprocating piston mechanism |
US10234006B2 (en) | 2012-01-24 | 2019-03-19 | Gomecsys B.V. | Reciprocating piston mechanism |
US10233966B2 (en) | 2013-11-13 | 2019-03-19 | Gomecsys B.V. | Method of assembling and an assembly of a crankshaft and a crank member |
US10145299B2 (en) | 2014-04-08 | 2018-12-04 | Gomecsys B.V. | Internal combustion engine including variable compression ratio |
US10557409B2 (en) | 2015-10-22 | 2020-02-11 | Gomecsys B.V. | Heat engine comprising a system for varying the compression ratio |
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